LG AT-12GULA0 Installation Manual Download Page 10 | Manualshive

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10

INSTALLATION

ENGLISH

Piping length and the elevation

Model

Pipe Size

mm(inch)

Length A(m)

Elevation B(m)

*Additional

refrigerant

(g/m)

Gas

Liquid

Standard

Max.

Standard

Max.

AT-Q12GULA0 9.52(3/8)

6.35(1/4)

5

20

5

15

15

Outdoor unit

Indoor unit

A

B

Outdoor unit

Indoor unit

A

B

CAUTION

• Rated performance for refrigerant line length of : 5m
• Capacity is based on standard length and maximum allowance length is on the basis of relia-

bility.

• Improper refrigerant charge may result in abnormal cycle.

!

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Summary of Contents for AT-12GULA0

Page 1: ...ore installing the product Installation work must be performed in accordance with the national wiring standards by authorized personnel only Please retain this installation manual for future reference after reading it thoroughly TYPE 1WAY CEILING CASSETTE P NO MFL68021603 ENGLISH ESPAÑOL PORTUGUESE ...

Page 2: ...condition er is used for many hours Clean the air filter once every 2 weeks Dust and impurities collected in the air filter may block the air flow or weaken the cooling dehumidifying functions For your records Staple your receipt to this page in case you need it to prove the date of purchase or for warranty purposes Write the model number and the serial number here Model number Serial number You c...

Page 3: ...Center Do not disassemble or repair the product There is risk of fire or electric shock Always ground the product There is risk of fire or electric shock Install the panel and the cover of control box securely There is risk of fire or electric shock Always install a dedicated circuit and breaker Improper wiring or installation may cause fire or electric shock Use the correctly rated breaker or fus...

Page 4: ...iciency could occur When flammable gas leaks turn off the gas and open a window for ventilation before turn the product on Do not use the telephone or turn switches on or off There is risk of explosion or fire If strange sounds or small or smoke comes from product Turn the breaker off or disconnect the power supply cable There is risk of electric shock or fire Stop operation and close the window i...

Page 5: ...the product Do not touch the metal parts of the product when removing the air filter They are very sharp There is risk of personal injury Do not step on or put anyting on the product outdoor units There is risk of personal injury and fail ure of product Always insert the filter securely Clean the filter every two weeks or more often if necessary A dirty filter reduces the efficiency of the air con...

Page 6: ...INTRODUCTION 7 Features 8 INSTALLATION 8 Installation Tools 9 Installation of Indoor Outdoor Unit 16 Remote Control Preparation 21 INSTALLATION OF DEC ORATIVE PANEL ACCES SORY 22 Indoor Unit Drain Piping 24 Air Purging 26 Test running 29 Installation guide at the seaside TABLE OF CONTENTS ...

Page 7: ...INTRODUCTION ENGLISH 7 Features Remote Controller Air Inlet Air Outlet INTRODUCTION ...

Page 8: ...ure Figure Name Screw driver Electric drill Measuring tape Knife Hole core drill Spanner Torque wrench Ohmmeter Hexagonal wrench Ammeter Gas leak detector Thermometer Horizontal meter Flaring tool set Manifold gauges Vacuum pump Name INSTALLATION ...

Page 9: ...t OUTDOOR Unit More than 300 Unit mm Installation of Indoor Outdoor Unit Selection of the best location Indoor unit There should not be any heat source or steam near the unit There should not be any obstacles to prevent the air circulation A place where air circulation in the room will be good A place where drainage can be easily obtained A place where noise prevention is taken into consideration ...

Page 10: ...d Standard Max Standard Max AT Q12GULA0 9 52 3 8 6 35 1 4 5 20 5 15 15 Outdoor unit Indoor unit A B Outdoor unit Indoor unit A B CAUTION Rated performance for refrigerant line length of 5m Capacity is based on standard length and maximum allowance length is on the basis of relia bility Improper refrigerant charge may result in abnormal cycle ...

Page 11: ... Decide the position for fixing bolts slightly tilted to the drain direction after considering the direction of drain hose Drill the hole for anchor bolt on the ceiling CAUTION This air conditioner uses a drain pump Horizontly install the unit using a level gauge During the installation care should be taken not to damage electric wires Ceiling board Level gauge Ceiling unit mm TU Chassis 600 250 9...

Page 12: ...flow into the suction of the air conditioner Make enough distance from a cooking room to install the air conditioner in such a place where it may not suck in oily steam 2 Avoid installing air conditioner in such circumstances where cutting oil mist or iron powder is in suspension in factories etc 3 Avoid places where inflammable gas is generated flows in is stored or vented 4 Avoid places where su...

Page 13: ... bolt from the bracket to 40mm Open the ceiling board along the outer edge of the paper model Air conditioner body Keep the length of 20 22mm between the air conditioner bottom surface and the ceiling surface Wall Indoor Outdoor Slope gradient for drain Should be 1 50 1 100 The following parts is option Hanging Bolt W 3 8 or M10 Nut W 3 8 or M10 Spring Washer M10 Plate Washer M10 Drill the piping ...

Page 14: ...ement Sand Gravel for the concrete should 1 2 4 ratio The foundation surface should be finished with mortar The edges of foundation should be rounded A drain passage should be made around the foundation to thoroughly drain water away from the equipment installation area If installing the outdoor units on the roof the roof s strength have to be checked Care should be taken for weather proofing Bloc...

Page 15: ...ndoor unit This remote controller equipped with liquid crystal display If this position is higher or lower dis play is difficult to see The standard height is 1 2 1 5m high Routing of the remote controller cord Keep the remote controller cord away from the refrigerant piping and the drain piping To protect the remote controller cord from electrical noise place the cord at least 5cm away from other...

Page 16: ...de it back into position Do not use rechargeable bat teries such batteries differ from standard dry cells in shape dimensions and per formance Romove the batteries from the remote controller if the air conditioner is not going to be used for some long time Wiring Connection Remove the control box cover for electrical connection between the indoor and outdoor unit Use the cord clamper to fix the co...

Page 17: ... power cord connected to the outdoor unit should be complied with the follow ing specifications Rubber insulation type H05RN F approved by HAR or SAA If the supply cord is damaged it must be replaced by a special cord or assembly available from the manufacturer or its service agent The connecting cable connected to the indoor and outdoor unit should be com plied with the following specifications R...

Page 18: ...5 For wiring use the designated power wire and connect firmly then secure to prevent outside pressure being exerted on the terminal block Use an appropriate screwdriver for tightening the terinal screws A screwdriver with a small head will strip the head and make prop er tighterning impossible Over tightening the terminal screws may break them ELECTRICAL WIRING 1 All wiring must comply with LOCAL ...

Page 19: ... copper tube in a bar or die as indi cated dimension in the table above Burrs removal Completely remove all burrs from the cut cross section of pipe tube Put the end of the copper tube pipe to down ward direction as you remove burrs in order to avoid to let burrs drop in the tubing Putting nut on Remove flare nuts attached to indoor and outdoor units than put them on pipe tube having completed bur...

Page 20: ...it After completing the piping connection be sure to check if there is gas leakage in indoor and outdoor connection Vacuum drying After completing the piping connection exe cute vacuum drying for the connecting piping and the indoor unit The vacuum drying must be carried out using the service ports of both the liquid and gas side valves Inclined Inside is shining without scratches Smooth all round...

Page 21: ... vane motor connector and display connector Plasma connector for plasma model 7 Install the air inlet grille including the air fil ter and side covers Good example Bad example Fit the insulator this part and be careful for cool air leakage Decorative panel Air conditioner unit Ceiling board Cool air leakage no good Decorative panel Air conditioner unit Ceiling board Air conditioner unit Decorative...

Page 22: ...g procedure to test the drain pump operation Connect the main drain pipe to the exterior and leave it provisionally until the test comes to an end Feed water to the flexible drain hose and check the piping for leakage Be sure to check the drain pump for normal operating and noise when electrical wiring is complete When the test is complete connect the flexi ble drain hose to the drain port on the ...

Page 23: ... than 8mm for refrigerant piping gas piping thick piping and drain piping add further 10mm to 30mm thick ness material Indoor unit Thermal insulator accessory Fastening band accessory Refrigerant piping Form the pipings 1 Wrap the connecting portion of indoor unit with the Insulation material and secure it with two Plastic Bands for the right pip ings If you want to connect an additional drain hos...

Page 24: ... Operating current rises Cooling or heating efficiency drops Moisture in the refrigerant circuit may freeze and block capillary tubing Water may lead to corrosion of parts in the refrigeration system Therefore after evacuating the system take a leak test for the piping and tubing between the indoor and outdoor unit Air purging with vacuum pump Check that both liquid and gas pipe between indoor and...

Page 25: ...nt system in a liquid state the top of the cylinder must be higher than its bottom when you pressurize the system Usually the cylinder is used in a vertical standing position Evacuation If the system is found free from all leakages relive the nitrogen pressure by loosening the charge hose connector at nitrogen cylinder Disconnect the hose from cylinder when pressure reaches to normal state Evacuat...

Page 26: ...are nut with adjustable wrench to prevent any leak age from the system Fasten back the valve cap on both gas and liquid side service valves Test running PRECAUTIONS IN TEST RUN The initial power supply must provide at least 90 of the rated voltage Otherwise the air conditioner should not be operated The test run is started by pressing the room temperature checking button and down timer button for ...

Page 27: ...power supply Circuit breaker is required Operate the unit for 15 minutes or more Evaluation of the performance Measure the temperature of the intake and discharge air Ensure the difference between the intake temperature and the discharge one is more than 8 C Cooling or reversely Heating Thermometer CAUTION After the confirmation of the above condi tions prepare the wiring as follows Never fail to ...

Page 28: ...the relation between cable length and thickness Never fail to equip a leakage breaker where it is wet or moist The following troubles would be caused by voltage drop down Vibration of a magnetic switch damage on the contact point there of fuse breaking disturbance to the normal function of a overload protection device Proper starting power is not given to the compressor NOTE Setting the Ceiling He...

Page 29: ...heat exchanger by using water It should be strong enough like concrete to prevent the sea wind from the sea The height and width should be more than 150 of the outdoor unit It should be keep more than 70 cm of space between outdoor unit and the windbreak for easy air flow CAUTION Air conditioners should not be installed in areas where corrosive gases such as acid or alkaline gas are produced Do no...

Page 30: ...30 ENGLISH ...

Page 31: ......

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